Built From
The Ground Up.
Crafted to Last.
Martinsen Construction provides residential construction, additions, ADUs, excavation, remodeling, siding, and site development throughout Central Oregon.
Licensed • Bonded • Insured • CCB #259188
Central Oregon
demands more
than a contractor.
It demands a builder.
The high desert doesn't forgive shoddy prep work. Freeze-thaw cycles, clay soils, and demanding terrain require a contractor who understands the land and builds accordingly. That's what we do.
Full-Scope
Construction
Every service offered by a crew that's accountable from the first phone call to the final walkthrough.
Work That
Speaks for Itself
The Work
You Don't See
Makes All
the Difference
Site prep isn't glamorous — but it determines whether your foundation holds, your drainage works, and your building lasts. We take groundwork as seriously as finish work.
Excavation & Site DevelopmentBased in Redmond.
Built across
Central Oregon.
We work across the full Central Oregon region. If your project is within reach, we're ready to work.
Grit.
Precision.
Accountability.
We founded Martinsen Construction in 2023 with one goal: do the work the right way. That means honest estimates, clear timelines, and a jobsite we're proud to show anyone.
Start Your ProjectStraight Talk, No Runaround
You'll know what we're building, when we're building it, and what it costs. No moving targets, no mystery line items.
Site Prep Done Right
The work you don't see matters most. We treat excavation, grading, and site prep with the same care as finish carpentry.
Clean Jobsites, Every Day
Your property is treated with respect. We leave every site secured, organized, and ready for the next phase — every day.
Licensed, Bonded, Insured
CCB# 259188. Fully licensed in Oregon, bonded, and insured on every project. You're covered from day one.
What Central Oregon
Builders Are Saying
“Rich and his crew were straightforward from day one. The estimate was accurate, the timeline held, and the quality of work was exactly what we were hoping for. Our addition came out better than we imagined.”
“We interviewed several contractors before choosing Martinsen. Best decision we made. They prepped the site correctly, communicated throughout, and cleaned up every single day. Would hire again without hesitation.”
“The excavation and site development work they did before our build was first-rate. They understand the terrain out here. No surprises, no shortcuts. Exactly what you want in a contractor.”
Tell Us About
Your Project
Fill out the form and we'll get back to you within 24 hours. Prefer to call? We pick up.
Ready to Break Ground?
Free estimates. Honest pricing. Work you can trust. Let's build something worth pointing at.